Hello, I recently changed my Mac computer for an M4 and, when I enter my serial number in native access for my TRAKTOR SCRATCH PRO 2 MK2, it gives me this message, "You have successfully registered tracktor scrath pro 2. You can now install this product from the library. If you are unable to install the product, you might to locate the installer of the product first " and I'm stuck, I don't know how to make it work, and I don't understand, Could you help me please. Musically